package com.itheima.provider.controller;

import com.itheima.provider.domain.Goods;
import com.itheima.provider.service.GoodsService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * Goods Controller 服务提供方
 *
 * @author Chengfei
 * @date 2020/8/23 23:28
 */
@RestController
@RequestMapping("/goods")
public class GoodsController {

    @Autowired
    private GoodsService goodsService;
    @Value("${server.port}")
    private int port;

    @GetMapping("/findOne/{id}")
    @HystrixCommand(fallbackMethod = "findOne_fallback", commandProperties = {
            //设置Hystrix的超时时间,默认1s
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000"),
            //监控时间  默认5000 毫秒
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "5000"),
            //失败次数  默认20次
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "20"),
            //失败率  默认50%
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "50"),

    })
    public Goods findOne(@PathVariable("id") int id) {

        //自定义错误 //用于熔断 监控测试
        if (id == 1) {
            int i = 1 / 0;
        }

        //睡眠2秒, 提供者手动设置3秒,消费者默认设置1秒
/*        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }*/

        Goods goods = goodsService.findOne(id);

        goods.setTitle(goods.getTitle() + ":" + port);

        return goods;
    }

    /**
     * 定义降级方法：
     * 1. 方法的返回值需要和调用方法一样
     * 2. 方法的参数（个数和类型）需要和调用方法一样
     */
    public Goods findOne_fallback(int id) {
        Goods goods = new Goods();
        goods.setTitle("系统维护中.....");

        return goods;
    }

}
